101
|
Bai HX, Zhou H, Tan X, Huang X, Yang L. Cerebral Amyloid Angiopathy as an Etiology for Cortical Superficial Siderosis: An Unproven Hypothesis. AJNR Am J Neuroradiol 2016; 37:E25. [PMID: 26721767 DOI: 10.3174/ajnr.a4652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- H X Bai
- Department of Radiology Hospital of the University of Pennsylvania Philadelphia, Pennsylvania
| | - H Zhou
- Department of Neurology Xiangya Hospital, Central South University Hunan, China
| | - X Tan
- Department of Neurology The Second Xiangya Hospital, Central South University Hunan, China
| | - X Huang
- Department of Neurology The Second Xiangya Hospital, Central South University Hunan, China
| | - L Yang
- Department of Neurology The Second Xiangya Hospital, Central South University Hunan, China
| |
Collapse
|
102
|
Qiu L, Wu J, Pan C, Tan X, Lin J, Liu R, Chen S, Geng R, Huang W. Downregulation of CDC27 inhibits the proliferation of colorectal cancer cells via the accumulation of p21Cip1/Waf1. Cell Death Dis 2016; 7:e2074. [PMID: 26821069 PMCID: PMC4816181 DOI: 10.1038/cddis.2015.402] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 12/01/2015] [Accepted: 12/03/2015] [Indexed: 12/14/2022]
Abstract
Dysregulated cell cycle progression has a critical role in tumorigenesis. Cell division cycle 27 (CDC27) is a core subunit of the anaphase-promoting complex/cyclosome, although the specific role of CDC27 in cancer remains unknown. In our study, we explored the biological and clinical significance of CDC27 in colorectal cancer (CRC) growth and progression and investigated the underlying molecular mechanisms. Results showed that CDC27 expression is significantly correlated with tumor progression and poor patient survival. Functional assays demonstrated that overexpression of CDC27 promoted proliferation in DLD1 cells, whereas knockdown of CDC27 in HCT116 cells inhibited proliferation both in vitro and in vivo. Further mechanistic investigation showed that CDC27 downregulation resulted in G1/S phase transition arrest via the significant accumulation of p21 in HCT116 cells, and the upregulation of CDC27 promoted G1/S phase transition via the attenuation of p21 in DLD1 cells. Furthermore, we also demonstrated that CDC27 regulated inhibitor of DNA binding 1 (ID1) protein expression in DLD1 and HCT116 cells, and rescue assays revealed that CDC27 regulated p21 expression through modulating ID1 expression. Taken together, our results indicate that CDC27 contributes to CRC cell proliferation via the modulation of ID1-mediated p21 regulation, which offers a novel approach to the inhibition of tumor growth. Indeed, these findings provide new perspectives for the future study of CDC27 as a target for CRC treatment.
Collapse
Affiliation(s)
- L Qiu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - J Wu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - C Pan
- Medical Oncology, Sichuan Cancer Hospital and Institute, Second People's Hospital of Sichuan Province, Chengdu, China
| | - X Tan
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - J Lin
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - R Liu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - S Chen
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - R Geng
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - W Huang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| |
Collapse
|
103
|
Wang J, Kang G, Wu A, Liu Y, Zang J, Li P, Tan X, Shimura T, Kuroda K. Investigation of the extraordinary null reconstruction phenomenon in polarization volume hologram. Opt Express 2016; 24:1641-1647. [PMID: 26832542 DOI: 10.1364/oe.24.001641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Polarization holography is the superposition of differently polarized beams. Due to its ability to record the polarization states, some extraordinary optical phenomena were found in the polarization holography. For example, the recently reported null-reconstruction phenomenon in polarization volume hologram is odd for the conventional holography which only records the amplitude and phase. In this paper, we perform a thorough investigation of the null reconstruction of polarization hologram recorded by orthogonal circularly polarized waves. To explore the mechanism behind this phenomenon, an interferometry was built to measure the phase difference between the same polarized components within the reconstructed wave. The phase difference of π was secured in our experiment, indicating a destructive interfering effect, which nicely explains the extraordinary null reconstruction observed in the polarization hologram.
Collapse
|
104
|
Zhao B, Tan X, Yang H, Li Z, Zheng K, Xiong Y, Zhong M. Endovascular Coiling versus Surgical Clipping for Poor-Grade Ruptured Intracranial Aneurysms: Postoperative Complications and Clinical Outcome in a Multicenter Poor-Grade Aneurysm Study. AJNR Am J Neuroradiol 2015; 37:873-8. [PMID: 26721769 DOI: 10.3174/ajnr.a4649] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 11/08/2015] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND PURPOSE Endovascular coiling is an alternative to surgical clipping for ruptured intracranial aneurysms. However, no large multicenter prospective study has compared coiling and clipping in patients with poor-grade ruptured aneurysms. We aimed to determine differences in postoperative complications and clinical outcome between the 2 treatments in this group of patients. MATERIALS AND METHODS A Multicenter Poor-Grade Aneurysm Study was a prospective, multicenter, observational registry of consecutive patients who presented with poor-grade ruptured aneurysms. Three hundred sixty-six patients were enrolled from October 2010 to March 2012. "Poor-grade aneurysm" was defined as a World Federation of Neurosurgical Societies grade of IV or V at the time of aneurysm treatment. Two hundred sixty-two patients received aneurysm treatment within 21 days and were included. Clinical outcomes were assessed at discharge and at 6 and 12 months by the modified Rankin Scale. RESULTS One hundred thirty-three (50.8%) patients underwent endovascular coiling. Unadjusted analysis showed that the outcome rate (mRS 0-1 or mRS 0-2) at 6 and 12 months in patients undergoing coiling was higher than that in patients undergoing clipping. In adjusted analyses, there was no statistically significant difference in outcomes at 6 and 12 months between the 2 groups. The risk of radiologic hydrocephalus was higher in patients treated with coiling than that in those treated with clipping (adjusted OR, 3.36; 95% CI, 1.13-10.01; P = .030). CONCLUSIONS The long-term outcome in selected patients was similar between endovascular coiling and clipping for poor-grade ruptured aneurysms. The risk of radiologic hydrocephalus was higher after endovascular treatment of poor-grade aneurysms.
Collapse
Affiliation(s)
- B Zhao
- From the Department of Neurosurgery (B.Z., X.T., Z.L., K.Z., Y.X., M.Z.), The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China Department of Neurosurgery (B.Z.), Mayo Clinic, Rochester, Minnesota
| | - X Tan
- From the Department of Neurosurgery (B.Z., X.T., Z.L., K.Z., Y.X., M.Z.), The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - H Yang
- Department of Neurosurgery (H.Y.), The First Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Z Li
- From the Department of Neurosurgery (B.Z., X.T., Z.L., K.Z., Y.X., M.Z.), The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - K Zheng
- From the Department of Neurosurgery (B.Z., X.T., Z.L., K.Z., Y.X., M.Z.), The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Y Xiong
- From the Department of Neurosurgery (B.Z., X.T., Z.L., K.Z., Y.X., M.Z.), The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - M Zhong
- From the Department of Neurosurgery (B.Z., X.T., Z.L., K.Z., Y.X., M.Z.), The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | | |
Collapse
|
105
|
|
106
|
Jia G, Piao HG, Tan X, Jiang Y, Yang X, Huang Y. Correlation Between Spin Configuration and Magnetostatic Interaction of Ferromagnetic Nanocubes. J Nanosci Nanotechnol 2015; 15:9234-9239. [PMID: 26726674 DOI: 10.1166/jnn.2015.11405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have investigated three-dimensional (3D) spin configurations of a one-dimensional (1D) array composed of three ferromagnetic nanocubes by means of micromagnetic simulations. In order to modulate the magnetostatic interaction between adjacent nanocuboids, the magnetic field was applied as a controllable external magnetostatic environment. Without any external field, the spin configurations of the asymmetric 3D magnetic vortex structures in each nanocube exhibit identical magnetic chirality. With the increase of the external field, the magnetostatic environment was gradually dominated by the external field, and enhanced the component along field direction of the magnetostatic interaction between nanocuboids, and even accelerated the formation of the cylindrical 3D vortex spin structure at the center of each cuboid lying in the field direction. Interestingly, under a 100 mT field less than the saturation field, the ferromagnetic array exhibited negative magnetic energy, with the three vortex structures occasionally exhibiting opposing chiralities. There was a competitive relationship amongst the shape anisotropy, magnetic energy minimization, and magnetostatic interaction between ferromagnetic nanocuboids, leading to the complex spin configuration and the negative energy phenomenon of the ferromagnetic array.
Collapse
|
107
|
Tan X, Chen Y, Li J, Li X, Miao Z, Xin N, Zhu J, Ge W, Feng Y, Xu X. The inhibition of Cdk5 activity after hypoxia/ischemia injury reduces infarct size and promotes functional recovery in neonatal rats. Neuroscience 2015; 290:552-60. [PMID: 25665755 DOI: 10.1016/j.neuroscience.2015.01.054] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 01/20/2015] [Accepted: 01/23/2015] [Indexed: 01/05/2023]
Abstract
Recent studies indicate that over-activation of Cdk5 is a crucial pro-death signal and Cdk5 activity inhibition provides neuroprotection in animal stroke models. However, Cdk5 inhibitors are reported to affect physiological functions of Cdk5 and lead to serious side effects. Therefore, targeting Cdk5 or its activators without affecting physiological functions of Cdk5 is a therapeutic strategy for ischemic brain injury. In this study, we examined Cdk5 activity in a rat hypoxia/ischemia (HI) injury model. Cdk5 expression was not changed after HI injury, but Cdk5 activity significantly increased, which was demonstrated by the increased phorsphorylation-phosphorylation of Tau and glucocorticoid receptor (GR), two downstream signals of Cdk5. We further showed that the levels of Cdk5 activators p35 and p39 decreased after HI injury, while p25, which is converted from p35 and has a higher activator activity on Cdk5, increased markedly after HI injury. P5, a 24-residue mimetic peptide of p35, was reported to specifically inhibit the p25/Cdk5 signal pathway in an Alzheimer's disease model. P5-TAT, which can cross the blood-brain barrier and cell membrane facilitated by TAT protein, was used in our study. We found that p5-TAT treatment did not change the levels of p35, p39, and p25, but reduced the phorsphorylation of Tau and GR, suggesting the inhibition of the p25/Cdk5 by the peptide p5-TAT. This was supported by the fact that p5 interacted with Cdk5, but not with Cdk5 activators. In addition, p5-TAT reduced cleaved caspase-3 level, a marker of neuronal apoptosis. We further demonstrated that p5-TAT pre-treatment reduced cerebral infarct volume; even when p5-TAT was delayed to be administered at 24h after HI injury, p5-TAT still promoted long-term functional recovery. Therefore, Cdk5 inhibition by the small peptide p5-TAT or its derivatives is a promising therapeutic strategy for the treatment of ischemic brain injury including hypoxic-ischemic encephalopathy and stroke.
Collapse
Affiliation(s)
- X Tan
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and the Second Affiliated Hospital of Soochow University, Soochow University, Suzhou City, Jiangsu Province, China; The Institute of Neuroscience, Soochow University, Suzhou City, Jiangsu Province, China
| | - Y Chen
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and the Second Affiliated Hospital of Soochow University, Soochow University, Suzhou City, Jiangsu Province, China; The Institute of Neuroscience, Soochow University, Suzhou City, Jiangsu Province, China
| | - J Li
- Department of Neurology, Suzhou Kowloon Hospital, 118 Wansheng Street, Suzhou City, China
| | - X Li
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and the Second Affiliated Hospital of Soochow University, Soochow University, Suzhou City, Jiangsu Province, China; The Institute of Neuroscience, Soochow University, Suzhou City, Jiangsu Province, China
| | - Z Miao
- The Institute of Neuroscience, Soochow University, Suzhou City, Jiangsu Province, China
| | - N Xin
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and the Second Affiliated Hospital of Soochow University, Soochow University, Suzhou City, Jiangsu Province, China; The Institute of Neuroscience, Soochow University, Suzhou City, Jiangsu Province, China
| | - J Zhu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and the Second Affiliated Hospital of Soochow University, Soochow University, Suzhou City, Jiangsu Province, China
| | - W Ge
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and the Second Affiliated Hospital of Soochow University, Soochow University, Suzhou City, Jiangsu Province, China
| | - Y Feng
- Department of Pharmacology, Emory University School of Medicine, Atlanta, GA, USA.
| | - X Xu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and the Second Affiliated Hospital of Soochow University, Soochow University, Suzhou City, Jiangsu Province, China; The Institute of Neuroscience, Soochow University, Suzhou City, Jiangsu Province, China.
| |
Collapse
|
108
|
Tan X, He J, Li L, Yang G, Liu H, Tang S, Wang Y. Early hyperglycaemia and the early-term death in patients with spontaneous intracerebral haemorrhage: a meta-analysis. Intern Med J 2014; 44:254-60. [PMID: 24372661 DOI: 10.1111/imj.12352] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 12/12/2013] [Indexed: 01/04/2023]
Abstract
BACKGROUND AND AIMS Stroke is often accompanied by hyperglycaemia, and this has an important impact on prognosis. The aim of this study was to investigate the relationship between early hyperglycaemia and the outcome of spontaneous intracerebral haemorrhage (sICH). METHODS A systematic literature search on PubMed, Embase, Cochran, WANFANG DATA, VIP and CNKI databases was conducted, and eight eligible studies were retrieved. Relative risks and 95% confidence interval (CI) in the hyperglycaemia group compared with the non-hyperglycaemia group were calculated and meta-analysed when possible. RESULTS Eight controlled trials and cohort studies totalling 3756 patients addressing early hyperglycaemia and the outcome of sICH were compiled for this meta-analysis. Cut-off points for defining hyperglycaemia was 6.1-8.3 mmol/L, and the median cut-off value was 7.5 mmol/L. Studies were assigned to one of the two subgroups: the group A (for studies with the values of glucose concentrations above the median cut-off) and the group B (for studies with the values of glucose concentrations below the median cut-off). The RR for short-term death associated with hyperglycaemia was 3.65 (95% confidence interval (CI) (3.08, 4.33); P < 0.0001). In the subgroup analysis, the relative risk values were 3.46 (95% CI (1.66, 7.20); P = 0.0009) and 3.53 (95% CI (2.92, 4.26); P < 0.00001) for the groups A and B respectively. The publication bias showed that Egger's test (P > 0.1), Begg's test (P > 0.05) and Nfs0.05 exceeded included studies. CONCLUSIONS Early hyperglycaemia can significantly increase the rate of early-term death in patients with sICH, independent of the cut-off points for hyperglycaemia.
Collapse
Affiliation(s)
- X Tan
- Department of Endocrinology, 9th People's Hospital of Chongqing, Chongqing, China
| | | | | | | | | | | | | |
Collapse
|
109
|
Misof B, Liu S, Meusemann K, Peters RS, Donath A, Mayer C, Frandsen PB, Ware J, Flouri T, Beutel RG, Niehuis O, Petersen M, Izquierdo-Carrasco F, Wappler T, Rust J, Aberer AJ, Aspock U, Aspock H, Bartel D, Blanke A, Berger S, Bohm A, Buckley TR, Calcott B, Chen J, Friedrich F, Fukui M, Fujita M, Greve C, Grobe P, Gu S, Huang Y, Jermiin LS, Kawahara AY, Krogmann L, Kubiak M, Lanfear R, Letsch H, Li Y, Li Z, Li J, Lu H, Machida R, Mashimo Y, Kapli P, McKenna DD, Meng G, Nakagaki Y, Navarrete-Heredia JL, Ott M, Ou Y, Pass G, Podsiadlowski L, Pohl H, von Reumont BM, Schutte K, Sekiya K, Shimizu S, Slipinski A, Stamatakis A, Song W, Su X, Szucsich NU, Tan M, Tan X, Tang M, Tang J, Timelthaler G, Tomizuka S, Trautwein M, Tong X, Uchifune T, Walzl MG, Wiegmann BM, Wilbrandt J, Wipfler B, Wong TKF, Wu Q, Wu G, Xie Y, Yang S, Yang Q, Yeates DK, Yoshizawa K, Zhang Q, Zhang R, Zhang W, Zhang Y, Zhao J, Zhou C, Zhou L, Ziesmann T, Zou S, Li Y, Xu X, Zhang Y, Yang H, Wang J, Wang J, Kjer KM, Zhou X. Phylogenomics resolves the timing and pattern of insect evolution. Science 2014; 346:763-7. [DOI: 10.1126/science.1257570] [Citation(s) in RCA: 1672] [Impact Index Per Article: 167.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
110
|
Tan X, Wang YY, Chen XY, Xian L, Guo JJ, Liang GB, Chen MW. Quantitative assessment of the effects of the EPHX1 Tyr113His polymorphism on lung and breast cancer. Genet Mol Res 2014; 13:7437-46. [PMID: 25222243 DOI: 10.4238/2014.september.12.10] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The association between the microsomal epoxide hydrolase 1 gene (EPHX1) Tyr113His polymorphism and lung cancer and breast cancer risk has been reported in many recent studies, but there is no consensus among the results. Thus, we examined the association between the EPHX1 Tyr113His polymorphism and lung cancer through a meta-analysis. A comprehensive literature search was performed using the Pubmed and Embase databases. Odds ratios with 95% confidence intervals were used to assess the strength of associations. Our meta-analysis suggested that the Tyr113His polymorphism was associated with lung cancer risk in Asians under 3 genetic models, including a C vs T, CC vs TT, and recessive model. However, the risk was decreased in Caucasians under the genetic models, including a C vs T, CC vs TT, or CT vs TT, dominant, and recessive model. In contrast, there was no association with breast cancer risk for any of the genetic models. Our meta-analysis suggested that the EPHX1 Tyr113His polymorphism may be a risk factor for lung cancer in Asians, whereas it may be a decreased risk factor among Caucasians. However, this polymorphism was not found to be associated with breast cancer.
Collapse
Affiliation(s)
- X Tan
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - Y Y Wang
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - X Y Chen
- Department of Oncology, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - L Xian
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - J J Guo
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - G B Liang
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - M W Chen
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| |
Collapse
|
111
|
Koopmans T, Anaparti V, Castro-Piedras I, Yarova P, Irechukwu N, Nelson C, Perez-Zoghbi J, Tan X, Ward JPT, Wright DB. Ca2+ handling and sensitivity in airway smooth muscle: emerging concepts for mechanistic understanding and therapeutic targeting. Pulm Pharmacol Ther 2014; 29:108-20. [PMID: 24831539 DOI: 10.1016/j.pupt.2014.05.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Revised: 03/28/2014] [Accepted: 05/01/2014] [Indexed: 02/01/2023]
Abstract
Free calcium ions within the cytosol serve as a key secondary messenger system for a diverse range of cellular processes. Dysregulation of cytosolic Ca(2+) handling in airway smooth muscle (ASM) has been implicated in asthma, and it has been hypothesised that this leads, at least in part, to associated changes in both the architecture and function of the lung. Significant research is therefore directed towards furthering our understanding of the mechanisms which control ASM cytosolic calcium, in addition to those regulating the sensitivity of its downstream effector targets to calcium. Key aspects of the recent developments in this field were discussed at the 8th Young Investigators' Symposium on Smooth Muscle (2013, Groningen, The Netherlands), and are outlined in this review.
Collapse
Affiliation(s)
- T Koopmans
- Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands
| | - V Anaparti
- Department of Immunology, University of Manitoba, Winnipeg, Canada
| | - I Castro-Piedras
- Cell Physiology and Molecular Biophysics, Texas Tech University Health Sciences Center, TX, USA
| | - P Yarova
- Cardiff School of Biosciences, Cardiff University, UK
| | - N Irechukwu
- Division of Asthma, Allergy and Lung Biology, King's College London, UK
| | - C Nelson
- School of Science & Technology, Nottingham Trent University, Nottingham, UK
| | - J Perez-Zoghbi
- Cell Physiology and Molecular Biophysics, Texas Tech University Health Sciences Center, TX, USA
| | - X Tan
- Lung Inflammation & Infection Lab, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - J P T Ward
- Division of Asthma, Allergy and Lung Biology, King's College London, UK
| | - D B Wright
- Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands; Division of Asthma, Allergy and Lung Biology, King's College London, UK.
| |
Collapse
|
112
|
Chen QM, Cheng DJ, Liu SP, Ma ZG, Tan X, Zhao P. Genome-wide identification and expression profiling of the fatty acid desaturase gene family in the silkworm, Bombyx mori. Genet Mol Res 2014; 13:3747-60. [PMID: 24854660 DOI: 10.4238/2014.may.13.2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Fatty acid desaturases exist in all living organisms and play important roles in many different biologic processes, such as fatty acid metabolism, lipid biosynthetic processes, and pheromone biosynthetic processes. Using the available silkworm genome sequence, we identified 14 candidate fatty acid desaturase genes. Eleven genes contain 3 conserved histidine cluster motifs and 4 transmembrane domains, but their N-terminal residues exhibit obvious diversity. Phylogenetic analysis revealed that there are 6 groups; Bmdesat1 and Bmdesat5-8 were clustered into group 2, which is involved in Δ11 desaturation activity, and Bmdesat3-4 were grouped in group 1, which is involved in Δ9 desaturation activity. Twelve of the 14 genes have expressed sequence tag evidence. Microarray data and reverse transcription polymerase chain reaction analysis demonstrated that Bmdesat3-4 and Bmdesat10 were expressed from the larval to moth stages and in multiple tissues on day 3 of 5th instar larvae. Bmdesat9, Bmdesat11, and Bmdesat14 were expressed during the pupal and late-embryonic stage, suggesting that they may take part in fatty acid metabolism to provide energy. These results provide some insights into the functions of individual fatty acid desaturases in silkworm.
Collapse
Affiliation(s)
- Q M Chen
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - D J Cheng
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - S P Liu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - Z G Ma
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - X Tan
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - P Zhao
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| |
Collapse
|
113
|
Shah QA, Tan X, Bi S, Liu X, Hu S. Differential characteristics and in vitro angiogenesis of bone marrow- and peripheral blood-derived endothelial progenitor cells: evidence from avian species. Cell Prolif 2014; 47:290-8. [PMID: 24824967 DOI: 10.1111/cpr.12111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 04/01/2014] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES This study was conducted to compare phenotypes and in vitro angiogenic capacity of putative endothelial progenitor cells (EPCs) derived from bone marrow (BM) and peripheral blood (PB), from an avian species. MATERIALS AND METHODS Mononuclear cells were isolated from chicken BM and PB (BMMNCs and PBMNCs) and cultured in EGM-2 medium. Cells at days 7-14 were used for the experiments. Expression of progenitor and endothelial markers, number of Dil-ac-LDL/lectin dual-positive cells and adipogenic and osteogenic differentiation were determined. Migration and in vitro angiogenic ability between BMMNC- and PBMNC-derived cells were compared. RESULTS PBMNCs developed typical EPC appearance, with initial spindle shape followed by a cobblestone form, whereas BMMNC-derived cells retained their constitutive spindle-like morphology throughout the study. Cells derived from both sources expressed CD133, CD31 and VEGFR-2, although PBMNCs-derived cells had lower CD133 expression. Nevertheless, number of Dil-ac-LDL/lectin dual-positive cells did not differ between groups. Adipogenic and osteogenic lineages were verified in BMMNC- but not in PBMNC-derived cells. PBMNC-derived cells formed tubular networks on Matrigel. However, BMMNC-derived cells formed few tube-like structures, which were not morphologically comparable to those developed by their counterparts. CONCLUSION Our results suggest that so called EPCs derived from BMMNCs are not 'true' EPCs, supporting previous findings on mammals that BM may not serve as an optimal isolation source of EPCs.
Collapse
Affiliation(s)
- Q A Shah
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | | | | | | | | |
Collapse
|
114
|
Tan X, Sun S, Liu Y, Zhu T, Wang K, Ren T, Wu Z, Xu H, Zhu L. Analysis of Th17-associated cytokines in tears of patients with dry eye syndrome. Eye (Lond) 2014; 28:608-13. [PMID: 24603428 PMCID: PMC4017119 DOI: 10.1038/eye.2014.38] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 01/21/2014] [Indexed: 11/09/2022] Open
Abstract
PURPOSE To determine the levels of Th17-associated cytokines, particularly interleukin (IL)-17 and IL-22 in tears of patients with dry eye syndrome. METHODS Tear samples were collected from 20 healthy volunteers, 20 dry eye (DE) patients with non-Sjögren's syndrome (NSSDE) and 20 DE patients with Sjögren's syndrome (SSDE). Symptom questionnaire was self-administered and multiple dry eye disease (DED)-related clinical tests were performed. The levels of IL-17 and IL-22 in tears were measured by enzyme-linked immunosorbent assay. RESULTS The levels of IL-17 and IL-22 were significantly increased in tears of DE patients compared with those of controls and also higher in SSDE patients compared with those of NSSDE patients (P<0.05). Moreover, the levels of IL-17 and IL-22 were positively correlated with questionnaire score and keratopathy score but negatively correlated with tear film break-up time and Schirmer I test in both NSSDE and SSDE patients (P<0.05). CONCLUSIONS The levels of IL-17 and IL-22 in tears were significantly increased in DE patients, which were associated with the disease severity. Therefore, Th17 cell-associated cytokines, particularly IL-17 and IL-22, may have important roles in the immunopathogenesis of the DED.
Collapse
Affiliation(s)
- X Tan
- Department of Ophthalmology, Wuxi No. 2, People's Hospital, Nanjing Medical University, Wuxi, China
| | - S Sun
- Department of Ophthalmology, Wuxi No. 2, People's Hospital, Nanjing Medical University, Wuxi, China
| | - Y Liu
- Department of Cataract, Zhongshan Ophthalmic Centre, Guangzhou, China
| | - T Zhu
- Department of Ophthalmology, Wuxi No. 2, People's Hospital, Nanjing Medical University, Wuxi, China
| | - K Wang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - T Ren
- Department of Ophthalmology, Wuxi No. 2, People's Hospital, Nanjing Medical University, Wuxi, China
| | - Z Wu
- Department of Ophthalmology, Wuxi No. 2, People's Hospital, Nanjing Medical University, Wuxi, China
| | - H Xu
- Department of Ophthalmology, Wuxi No. 2, People's Hospital, Nanjing Medical University, Wuxi, China
| | - L Zhu
- Save Sight Institute, University of Sydney, Sydney, NSW, Australia
| |
Collapse
|
115
|
Zhang G, Liu T, Liu X, Yi Y, Liu L, Tan X, Luo J, He J, Ma H, Lu A, Deng Z, Shu Y. The Processing Behavior of Liquid Sn/Molten Polyethylene during Internal Mixing. INT POLYM PROC 2014. [DOI: 10.3139/217.2635] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
In our study, liquid tin (Sn) was mixed with molten polyethylene using an internal mixer; the interfacial tension between the liquid Sn and molten polyethylene was measured using the deformed drop retraction method. The results showed that liquid Sn separated when the Sn content was higher than approximately 2 % by volume because of the interfacial tension of up to 167 mN/m and the 106-fold viscosity difference between the liquid Sn and the molten polyethylene. When Sn separation did not occur, the effects of the mixing time and rotary speed on the degree of mixing and the Sn particle size were analyzed using thermogravimetric analysis and scanning electron microscopy. The results showed that the effects of mixing time and rotary speed on the degree of mixing and Sn particle size can be combined as the impact of specific energy input. With increasing specific energy input, the degree of mixing initially increased and subsequently remained constant, while the Sn particle size initially decreased and subsequently remained constant. The refinement of the dispersed phase was completed with a low specific energy input, but the homogenization of the dispersed phase required a higher specific energy input to achieve completion, revealing the relationship between distributive mixing and dispersive mixing.
Collapse
Affiliation(s)
- G. Zhang
- School of Material Science and Engineering , Southwest University of Science and Technology, Mianyang, Sichuan , PRC
- Institute of Chemical Materials , China Academy of Engineering Physics, Mianyang, Sichuan , PRC
| | - T. Liu
- Institute of Chemical Materials , China Academy of Engineering Physics, Mianyang, Sichuan , PRC
| | - X. Liu
- Institute of Chemical Materials , China Academy of Engineering Physics, Mianyang, Sichuan , PRC
| | - Y. Yi
- School of Material Science and Engineering , Southwest University of Science and Technology, Mianyang, Sichuan , PRC
| | - L. Liu
- School of Material Science and Engineering , Southwest University of Science and Technology, Mianyang, Sichuan , PRC
| | - X. Tan
- Research Center of Laser Fusion , China Academy of Engineering Physics, Mianyang, Sichuan , PRC
| | - J. Luo
- Research Center of Laser Fusion , China Academy of Engineering Physics, Mianyang, Sichuan , PRC
| | - J. He
- Institute of Chemical Materials , China Academy of Engineering Physics, Mianyang, Sichuan , PRC
| | - H. Ma
- School of Material Science and Engineering , Southwest University of Science and Technology, Mianyang, Sichuan , PRC
| | - A. Lu
- Institute of Chemical Materials , China Academy of Engineering Physics, Mianyang, Sichuan , PRC
| | - Z. Deng
- Institute of Chemical Materials , China Academy of Engineering Physics, Mianyang, Sichuan , PRC
| | - Y. Shu
- Institute of Chemical Materials , China Academy of Engineering Physics, Mianyang, Sichuan , PRC
| |
Collapse
|
116
|
Abstract
Microsomal epoxide hydrolase 1 (EPHX1) is an important biological phase II metabolic enzyme that is extensively involved in the metabolism of diverse environmental carcinogens such as polycyclic aromatic hydrocarbons and heterocyclic amines. Many articles have reported the association between EPHX1 (Tyr113His and His139Arg) polymorphisms and esophageal cancer risk, but the results are controversial. This study aimed to identify the association between EPHX1 (Tyr113His and His139Arg) polymorphisms and esophageal cancer risk by meta-analysis. The odds ratio (OR) with 95% confidence interval (95%CI) was used to evaluate the strength of the associations. Heterogeneity was estimated by the chi-square-based Q-statistic test and the P value. Meanwhile, the random-effect or fixed-effect model was used according to the between-study heterogeneity. Begg's funnel plot and the Egger test were performed to assess the publication bias of articles. Finally, 8 case-control studies involving 1158 cases and 1868 controls for the Tyr113His polymorphism and 7 case-control studies involving 901 cases and 1615 controls for the His139Arg polymorphism were included in this meta-analysis. Meta-analysis showed that the Tyr113His polymorphism was a stronger power trend towards risk for esophageal cancer using a recessive model (CC versus CT+TT, OR = 1.204, 95%CI = 1.001-1.450, P = 0.049). However, no significant associated risk was found between the His139Arg polymorphism and esophageal cancer. These findings suggest that the Tyr113His polymorphism might be a stronger power trend towards risk for esophageal cancer. However, no evidence was found for the association between the EPHX1 His139Arg polymorphism and esophageal cancer risk.
Collapse
Affiliation(s)
- X Tan
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - W W He
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - Y Y Wang
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - L J Shi
- Department of Oncology, Cancer Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - M W Chen
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| |
Collapse
|
117
|
Lu J, Zeng H, Zheng H, Yi L, Guo X, Liu L, Sun L, Tan X, Li H, Ke C, Lin J. Hand, foot and mouth disease in Guangdong, China, in 2013: new trends in the continuing epidemic. Clin Microbiol Infect 2014; 20:O442-5. [PMID: 24428125 DOI: 10.1111/1469-0691.12468] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 11/20/2013] [Indexed: 11/30/2022]
Abstract
Millions of incidents of hand, foot and mouth disease occur annually in China, with EVA71 and CVA16 as two major causative pathogens. A provincial surveillance system has been implemented in Guangdong for almost 5 years to analyze the aetiological spectrum and epidemic changes. An unusual enterovirus type, CVA6, was identified as the predominant serotype associated with an HFMD epidemic from late 2012 to 2013. In contrast to virus strains isolated before, all CVA6/CHN/2012-2013 strains segregated into one major genetic cluster. This study suggested that one cluster of circulating CVA6 strain had emerged as a new and major cause during a continuing HFMD epidemic in Guangdong, China.
Collapse
Affiliation(s)
- J Lu
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China; Guangdong Provincial Institution of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
118
|
Cao Y, Minhas V, Tan X, Huang J, Wang B, Zhu M, Gao Y, Zhao T, Yang L, Wood C. High prevalence of early childhood infection by Kaposi's sarcoma-associated herpesvirus in a minority population in China. Clin Microbiol Infect 2013; 20:475-81. [PMID: 23992104 DOI: 10.1111/1469-0691.12340] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 05/06/2013] [Accepted: 07/14/2013] [Indexed: 11/30/2022]
Abstract
In China, KSHV seroprevalence varies considerably among different regions and ethnicities. But in Xinjiang province, located in the northwestern China, there is a very high seroprevalence of KSHV in adults of Kazak and Ughur ethnicities. However, KSHV prevalence in children and the risk factors associated with the acquisition of infection are currently not known. The aim of this study was to investigate the prevalence of KSHV infection and identify associated socioeconomic or behavioural risk factors and the humoral immune response among children in this population. This is a cross-sectional study (N = 178) to screen children and their caregivers from Xinjiang for total KSHV antibodies, KSHV neutralizing antibodies and HIV infection. Structured questionnaires were utilized to investigate risk factors associated with KSHV prevalence. KSHV seroprevalence in children and caregivers in Xinjiang was 48.3% and 64.7%, respectively. Neutralizing antibody was detected in most seropositive caregivers (93.8%) but was detected in only 5.8% of the infected children. A significant association was observed between child KSHV seroprevalence and sharing of food among family members. These results suggest that similar to other endemic areas in Africa, KSHV infection in the minority populations of Xinjiang is likely to be occurring during early childhood, probably via horizontal transmission through saliva, and results in high seroprevalence in the adult population.
Collapse
Affiliation(s)
- Y Cao
- Nebraska Center for Virology and the School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, NE, USA; Hangzhou Normal University, Hangzhou, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
119
|
Yang HL, Yan J, Feng M, Tan X, Yan GY, Gan L, Sun C. Construction of suppressor of cytokine signaling 2 (SOCS2) adenoviral overexpression vector and its impact on growth-hormone-induced lipolysis in swine primary adipocytes. Genet Mol Res 2013; 12:1283-93. [PMID: 23359054 DOI: 10.4238/2013.january.9.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We investigated the effect of overexpression suppressor of cytokine signaling 2 (SOCS2) on lipolysis in swine primary adipocytes (pAd) induced by growth hormone (GH). We constructed pAd-SOCS2 adenoviral overexpression vectors to infect HEK293 cells for virus packaging and propagation. Cultured swine primary adipocytes were infected with virus particles; after 48 h the infected adipocytes were treated with 500 ng GH/mL in the growth medium. Lipometabolism-related gene expressions were detected at 0, 0.25, 0.5, 1, 2, and 4 h, by measuring mRNA and protein levels. The pAd-SOCS2 overexpression vector was successfully constructed and the concentration of titrated virus was 1.2 x 10(9) PFU/mL. We found that virus infection significantly increased SOCS2 mRNA and protein levels in swine primary adipocytes. Overexpression of SOCS2 significantly inhibited the increase in fatty acid synthase, adipose triglyceride lipase mRNA, and protein expression at 0.5 h. However, after 0.5 h, this inhibition was not significant. We concluded that overexpression of SOCS2 inhibited the increase in lipolysis induced by GH in swine primary adipocytes; this could provide a basis for studies of lipometabolism.
Collapse
Affiliation(s)
- H L Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | | | | | | | | | | | | |
Collapse
|
120
|
Tan X, Alrashdan YA, Alkhouri H, Oliver BGG, Armour CL, Hughes JM. Airway smooth muscle CXCR3 ligand production: regulation by JAK-STAT1 and intracellular Ca²⁺. Am J Physiol Lung Cell Mol Physiol 2013; 304:L790-802. [PMID: 23564506 DOI: 10.1152/ajplung.00356.2012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In asthma, airway smooth muscle (ASM) chemokine (C-X-C motif) receptor 3 (CXCR3) ligand production may attract mast cells or T lymphocytes to the ASM, where they can modulate ASM functions. In ASM cells (ASMCs) from people with or without asthma, we aimed to investigate JAK-STAT1, JNK, and Ca²⁺ involvement in chemokine (C-X-C motif) ligand (CXCL)10 and CXCL11 production stimulated by interferon-γ, IL-1β, and TNF-α combined (cytomix). Confluent, growth-arrested ASMC were treated with inhibitors for pan-JAK (pyridone-6), JAK2 (AG-490), JNK (SP-600125), or the sarco(endo)plasmic reticulum Ca²⁺ATPase (SERCA) pump (thapsigargin), Ca²⁺ chelator (BAPTA-AM), or vehicle before and during cytomix stimulation for up to 24 h. Signaling protein activation as well as CXCL10/CXCL11 mRNA and protein production were examined using immunoblot analysis, real-time PCR, and ELISA, respectively. Cytomix-induced STAT1 activation was lower and CXCR3 ligand mRNA production was more sensitive to pyridone-6 and AG-490 in asthmatic than nonasthmatic ASMCs, but CXCL10/CXCL11 release was inhibited by the same proportion. Neither agent caused additional inhibition of release when used in combination with the JNK inhibitor SP-600125. Conversely, p65 NF-κB activation was higher in asthmatic than nonasthmatic ASMCs. BAPTA-AM abolished early CXCL10/CXCL11 mRNA production, whereas thapsigargin reduced it in asthmatic cells and inhibited CXCL10/CXCL11 release by both ASMC types. Despite these inhibitory effects, neither Ca²⁺ agent affected early activation of STAT1, JNK, or p65 NF-κB. In conclusion, intracellular Ca²⁺ regulated CXCL10/CXCL11 production but not early activation of the signaling molecules involved. In asthma, reduced ASM STAT1-JNK activation, increased NF-κB activation, and altered Ca²⁺ handling may contribute to rapid CXCR3 ligand production and enhanced inflammatory cell recruitment.
Collapse
Affiliation(s)
- X Tan
- Faculty of Pharmacy, The University of Sydney, Camperdown, New South Wales, Australia.
| | | | | | | | | | | |
Collapse
|
121
|
Ying T, Zhong F, Wang ZH, Xie J, Tan X, Huang ZX. Generation of novel functional metalloproteins via hybrids of cytochrome c and peroxidase. Protein Eng Des Sel 2013; 26:401-7. [DOI: 10.1093/protein/gzt008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
|
122
|
Smail N, Paraskevas S, Tan X, Metrakos P, Cantarovich M. Predictors of End-Stage Renal Disease in Recipients of Pancreas Transplant Alone. Transplantation 2012. [DOI: 10.1097/00007890-201211271-01338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
123
|
Tan X, Yowler CJ, Super DM, Fratianne RB. The Interplay of Preference, Familiarity and Psychophysical Properties in Defining Relaxation Music. J Music Ther 2012; 49:150-79. [DOI: 10.1093/jmt/49.2.150] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
|
124
|
Kao R, Rajagopalan A, Beckett A, Beckett A, Rex R, Shah S, Waddell J, Boitano M, Faidi S, Babatunde O, Lawson F, Grant A, Sudarshan M, Sudarshan M, Takashashi M, Waggott M, Lampron J, Post A, Beale E, Bobrovitz N, Zakrison T, Smith A, Bawazeer M, Evans C, Leeper T, Kagedan D, Grenier T, Rezendo-Neto J, Roberts D, Roberts D, Stark P, Berg R, Mehta S, Gardner P, Moore L, Vassilyadi M, Moore L, Moore L, Hoshizaki B, Rezende-Neto J, Slaba I, Ramesh A, Grigorovich A, Parry N, Pajak C, Rosenbloom B, Grunfeld A, van Heest R, Fernandes J, Doucet J, Schooler S, Ali J, Klassen B, Santana M, McFarlan A, Ball C, Blackmore C, Rezende-Neto J, Kidane B, Hicks C, Brennan M, Brennan M, Harrington A, Sorvari A, Stewart TC, Biegler N, Chaubey V, Tsang B, Benjamin S, Hogan A, Fraser J, Martin M, Bridge J, Faidi S, Waligora M, Hsiao M, Sharma S, Sankarankutty A, Mckee J, Mckee J, Mckee J, Snider C, Szpakowski J, Brown R, Shah S, Shiu M, Chen M, Bell N, Besserer F, Bell N, Trudeau MO, Alhabboubi M, Rezende-Neto J, Rizoli S, Hill A, Joseph B, Lawless B, Jiao X, Xenocostas A, Rui T, Parry N, Driman D, Martin C, Stewart TC, Walsh J, Parry N, Merritt N, Elster E, Tien H, Phillips L, Bratu I, Nascimento B, Pinto R, Callum J, Tien H, Rizoli S, McMullan J, McGlasson R, Mahomed N, Flannery J, Bir C, Baillie F, Coates A, Asiri S, Foster P, Baillie F, Bhandari M, Phillips L, Bratu I, Schuurman N, Oliver L, Nathens A, Yazdani A, Alhabboubi M, St. Louis E, Tan X, Fata P, Deckelbaum D, Chughtai T, Razek T, Khwaja K, St. Louis E, Alhabboubi M, Tan X, Fata P, Deckelbaum D, Chughtai T, Razek T, Khwaja K, Takada M, Sawano M, Ito H, Tsutsumi H, Keenan A, Waggott M, Hoshizaki B, Brien S, Gilchrist M, Janis J, Phelan H, Minei J, Santana M, Stelfox H, McCredie V, Leung E, Garcia G, Rizoli S, Nathens A, Dixon E, Niven D, Kirkpatrick A, Feliciano D, D’Amours S, Ball C, Ahmed N, Izadi H, McFarlan A, Nathens A, Pavenski K, Nathens A, Bridge J, Tallon J, Leeper W, Vogt K, Stewart TC, Gray D, Parry N, Ameer A, Alhabboubi M, Alzaid S, Deckelbaum D, Fata P, Khwaja K, Razek T, Deckelbaum D, Drudi L, Boulva K, Rodrigue N, Khwaja K, Chughtai T, Fata P, Razek T, Rizoli S, Carreiro P, Lisboa T, Winter P, Ribeiro E, Cunha-Melo J, Andrade M, Zygun D, Grendar J, Ball C, Robertson H, Ouellet JF, Cheatham M, Kirkpatrick A, Ball C, Ouellet JF, McBeth P, Kirkpatrick A, Dixon E, Groff P, Inaba K, Okoye O, Pasley J, Demetriades D, Al-Harthi F, Cheng A, Lalani A, Mikrogianakis A, Cayne S, Knittel-Keren D, Gomez M, Stelfox H, Turgeon A, Lapointe J, Bourgeois G, Karton C, Rousseau P, Hoshizaki B, Stelfox H, Turgeon A, Bourgeois G, Lapointe J, Stelfox H, Turgeon A, Bourgeois G, Lapointe J, Rousseau P, Braga B, Faleiro R, Magaldi M, Cardoso G, Lozada W, Duarte L, Rizoli S, Ball C, Oddone-Paolucci E, Doig C, Kortbeek J, Gomez M, Fish J, Leach L, Leelapattana P, Fleming J, Bailey C, Nolan B, DeMestral C, McFarlan A, Zakirova R, Nathens A, Dabbs J, Duff D, Michalak A, Mitchell L, Nathens A, Singh M, Topolovec-Vranic J, Tymianski D, Yetman L, Canzian S, MacPhail I, Constable L, van Heest R, Tam A, Mahadevan P, Kim D, Bansal V, Casola G, Coimbra R, Gladwin C, Misra M, Kumar S, Gautam S, Sorvari A, Blackwood B, Coates A, Baillie F, Stelfox H, Nathens A, Wong C, Straus S, Haas B, Lenartowicz M, Parkovnick M, Parry N, Inaba K, Dixon E, Salim A, Pasley J, Kirkpatrick A, Ouellet JF, Niven D, Kirkpatrick A, Ball C, Neto C, Nogueira G, Fernandes M, Almeida T, de Abreu EMS, Rizoli S, Abrantes W, Taranto V, Parry N, Forbes T, Knight H, Keenan A, Yoxon H, Macpherson A, Bridge J, Topolovec-Vranic J, Mauceri J, Butorac E, Ahmed N, Holmes J, Gilliland J, Healy M, Tanner D, Polgar D, Fraser D, McBeth P, Crawford I, Tiruta C, Ball C, Kirkpatrick A, Roberts D, Ferri M, Bobrovitz N, Khandwala F, Stelfox H, Widder S, Mckee J, Hogan A, Benjamin S, Atkinson P, Benjamin S, Watson I, Hogan A, Benjamin S, Woodford S, Jaramillo DG, Nathens A, Alonazi N, Coates A, Baillie F, Zhang C, McFarlan A, Sorvari A, Chalklin K, Canzian S, Nathens A, DeMestral C, Hill A, Langer J, Nascimento B, Alababtain I, Fung SY, Passos E, Luz L, Brnjac E, Pinto R, Rizoli S, Widder S, Widder S, Widder S, Nathens A, Van Heest R, Constable L, Mancini F, Heidary B, Bell N, Appleton L, Hennecke P, Taunton J, Khwaja K, O’Connor M, Hameed M, Garraway N, Simons R, Evans D, Taulu T, Quinn L, Kuipers D, Rizoli S, Rogers C, Geerts W, Rhind S, Rizoli S, George K, Quinn L, Babcock C, Hameed M, Simons R, Caron N, Hameed M, Simons R, Prévost F, Razek T, Khwaja K, Sudarshan M, Razek T, Fata P, Deckelbaum D, Khwaja K, de Abreu EMS, Neto C, Almeida T, Pastore M, Taranto V, Fernandes M, Rizoli S, Nascimento B, Sankarankutty A, Pinto R, Callum J, Tremblay L, Tien H, Fowler R, Pinto R, Nathens A, Sadoun M, Harris J, Friese R, Kulvantunyou N, O’Keeffe T, Wynne J, Tang A, Green D, Rhee P, Trpkovski J, Blount V. Trauma Association of Canada Annual Scientific Meeting abstractsErythroopoietin resuscitated with normal saline, Ringer’s lactate and 7.5% hypertonic saline reduces small intestine injury in a hemorrhagic shock and resuscitation rat model.Analgesia in the management of pediatric trauma in the resuscitative phase: the role of the trauma centre.Multidisciplinary trauma team care in Kandahar, Afghanistan: current injury patterns and care practices.Does computed tomography for penetrating renal injury reduce renal exploration? An 8-year review at a Canadian level 1 trauma centre.The other side of pediatric trauma: violence and intent injury.Upregulation of activated protein C leads to factor V deficiency in early trauma coagulopathy.A provincial integrated model of improved care for patients following hip fracture.Sports concussion: an Olympic boxing model comparing sex with biomechanics and traumatic brain injury.A multifaceted quality improvement strategy to optimize monitoring and management of delirium in trauma patients: results of a clinician survey.Risk factors for severe all-terrain vehicle injuries in Alberta.Evaluating potential spatial access to trauma centre care by severely injured patients.Incidence of brain injury in facial fractures.Surgical outcomes and the acute care surgery service.The acute care general surgery population and prognostic factors for morbidity and mortality.Disaster preparedness of trauma.What would you like to know and how can we help you? Assessing the needs of regional trauma centres.Posttraumatic stress disorder screening for trauma patients at a level 1 trauma centre.Physical and finite element model reconstruction of a subdural hematoma event.Abdominal wall reconstruction in the trauma patient with an open abdomen.Development and pilot testing of a survey to measure patient and family experiences with injury care.Occult shock in trauma: What are Canadian traumatologists missing?Timeliness in obtaining emergent percutaneous procedures for the severely injured patient: How long is too long?97% of massive transfusion protocol activations do not include a complete hemorrhage panel.Trauma systems in Canada: What system components facilitate access to definitive care?The role of trauma team leaders in missed injuries: Does specialty matter?The adverse consequences of dabigatran among trauma and acute surgical patients.A descriptive study of bicycle helmet use in Montréal.Factor XIII, desmopressin and permissive hypotension enhance clot formation compared with normotensive resuscitation: uncontrolled hemorrhagic shock model.Negative pressure wound therapy for critically ill adults with open abdominal wounds: a systematic review.The “weekend warrior:” Fact or fiction for major trauma?Canadian injury preventon curriculum: a means to promote injury prevention.Penetrating splenic trauma: Safe for nonoperative management?The pediatric advanced trauma life support course: a national initiative.The effectiveness of a psycho-educational program among outpatients with burns or complex trauma.Trauma centre performance indicators for nonfatal outcomes: a scoping review.The evaluation of short track speed skating helmet performance.Complication rates as a trauma care performance indicator: a systematic review.Unplanned readmission following admission for traumatic injury: When, where and why?Reconstructions of concussive impacts in ice hockey.How does head CT correlate with ICP monitoring and impact monitoring discontinuation in trauma patients with a Marshall CT score of I–II?Impact of massive transfusion protocol and exclusion of plasma products from female donors on outcome of trauma patients in Calgary region of Alberta Health Services.Primary impact arthrodesis for a neglected open Weber B ankle fracture dislocation.Impact of depression on neuropsychological functioning in electrical injury patients.Predicting the need for tracheostomy in patients with cervical spinal cord injury.Predicting crumping during computed tomography imaging using base deficit.Feasibility of using telehomecare technology to support patients with an acquired brain injury and family care-givers.Program changes impact the outcomes of severely injured patients.Do trauma performance indicators accurately reflect changes in a maturing trauma program?One-stop falls prevention information for clinicians: a multidisciplinary interactive algorithm for the prevention of falls in older adults.Use of focused assessment with sonography for trauma (FAST) for combat casualties in forward facilities.Alberta All-terrain Vehicle Working Group: a call to action.Observations and potential role for the rural trauma team development course (RTTDC) in India.An electronic strategy to facilitate information-sharing among trauma team leaders.Development of quality indicators of trauma care by a consensus panel.An evaluation of a proactive geriatric trauma consultation service.Celebrity injury-related deaths: Is a gangster rapper really gangsta?Prevention of delirium in trauma patients: Are we giving thiamine prophylaxis a fair chance?Intra-abdominal injury in patients who sustain more than one gunshot wound to the abdomen: Should non-operative management be used?Retrospective review of blunt thoracic aortic injury management according to current treatment recommendations.Telemedicine for trauma resuscitation: developing a regional system to improve access to expert trauma care in Ontario.Comparing trauma quality indicator data between a pediatric and an adult trauma hospital.Using local injury data to influence injury prevention priorities.Systems saving lives: a structured review of pediatric trauma systems.What do students think of the St. Michael’s Hospital ThinkFirst Injury Prevention Strategy for Youth?An evidence-based method for targeting a shaken baby syndrome prevention media campaign.The virtual mentor: cost-effective, nurse-practitioner performed, telementored lung sonography with remote physician guidance.Quality indicators used by teaching versus nonteaching international trauma centres.Compliance to advanced trauma life support protocols in adult trauma patients in the acute setting.Closing the quality improvement loop: a collaborative approach.National Trauma Registry: “collecting” it all in New Brunswick.Does delay to initial reduction attempt affect success rates for anterior shoulder dislocation (pilot study)?Use of multidisciplinary, multi-site morbidity and mortality rounds in a provincial trauma system.Caring about trauma care: public awareness, knowledge and perceptions.Assessing the quality of admission dictation at a level 1 trauma centre.Trauma trends in older adults: a decade in review.Blunt splenic injury in patients with hereditary spherocytosis: a population-based analysis.Analysis of trauma team activation in severe head injury: an institutional experience.ROTEM results correlate with fresh frozen plasma transfusion in trauma patients.10-year trend of assault in Alberta.10-year trend in alcohol use in major trauma in Alberta.10-year trend in major trauma injury related to motorcycles compared with all-terrain vehicles in Alberta.Referral to a community program for youth injured by violence: a feasibility study.New impaired driving laws impact on the trauma population at level 1 and 3 trauma centres in British Columbia, Canada.A validation study of the mobile medical unit/polyclinic team training for the Vancouver 2010 Winter Games.Inferior vena cava filter use in major trauma: the Sunny-brook experience, 2000–2011.Relevance of cellular microparticles in trauma-induced coagulopathy: a systemic review.Improving quality through trauma centre collaboratives.Predictors of acute stress response in adult polytrauma patients following injury.Patterns of outdoor recreational injury in northern British Columbia.Risk factors for loss-to-follow up among trauma patients include functional, socio-economic, and geographic determinants: Would mandating opt-out consent strategies minimize these risks?Med-evacs and mortality rates for trauma from Inukjuak, Nunavik, Quebec.Review of open abdomens in McGill University Health Centre.Are surgical interventions for trauma associated with the development of posttraumatic retained hemothorax and empyema?A major step in understanding the mechanisms of traumatic coagulopathy: the possible role of thrombin activatable fibrinolysis inhibitor.Access to trauma centre care for patients with major trauma.Repeat head computed tomography in anticoagulated traumatic brain injury patients: still warranted.Improving trauma system governance. Can J Surg 2012. [DOI: 10.1503/cjs.006312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
|
125
|
Wang X, Bu H, Tan X. Role of milk fat globule-EGF factor 8 (MFG-E8) on macrophage phagocytosis in acute and chronic alcohol exposure. Alcohol 2012. [DOI: 10.1016/j.alcohol.2011.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
126
|
Zhang S, Han D, Tan X, Feng J, Guo Y, Ding Y. Diagnostic accuracy of 18 F-FDG and 11 C-PIB-PET for prediction of short-term conversion to Alzheimer's disease in subjects with mild cognitive impairment. Int J Clin Pract 2012; 66:185-98. [PMID: 22257044 DOI: 10.1111/j.1742-1241.2011.02845.x] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
In recent years, the role of PET imaging in the prediction of mild cognitive impairment (MCI) to Alzheimer's disease (AD) conversion has been the subject of many longitudinal studies. The purpose of this study was to perform a meta-analysis to estimate the diagnostic accuracy of (18) F-fluoro-2-deoxyglucose-positron emission tomography (FDG-PET) and (11) C-Pittsburgh Compound B-positron emission tomography (PIB-PET) for prediction of short-term conversion to AD in patients with MCI. The MEDLINE and EMBASE databases were systematically searched for relevant studies. Methodological quality of the included studies was assessed. Sensitivities and specificities of PET in individual studies were calculated and meta-analysis was undertaken with a random-effects model. A summary receiver operating characteristic (SROC) curve was constructed with the Moses-Shapiro-Littenberg method. Heterogeneity was tested, and the presence of publication bias was assessed. Potential sources for heterogeneity were explored by assessing whether or not certain covariates significantly influenced the relative diagnostic odds ratio (DOR). Pooled estimates of sensitivity, specificity, positive likelihood ratio (LR+), negative likelihood ratio (LR-), DOR and the SROC curve of each PET imaging were determined. A total of 13 research studies (seven FDG-PET and six PIB-PET) met inclusion criteria and had sufficient data for statistical analysis. FDG-PET pooled estimates had 78.7% sensitivity (95% CI, 68.7-86.6%),74.0% specificity (95% CI, 67.0-80.3%), 18.1 LR+(95% CI, 7.3-45.0) and 0.32 LR-(95% CI, 0.16-0.61); and PIB-PET pooled estimates had 93.5% sensitivity (95%CI, 71.3-99.9%), 56.2% specificity (95% CI, 47.2-64.8%), 2.01 LR+ (95% CI, 1.57-2.58) and 0.17 LR-(95% CI, 0.08-0.36). Overall DOR was 17.3 (95% CI, 5.08-59.2) for FDG-PET and 12.8 (95% CI, 5.35-30.54) for PIB-PET. Area under the SROC curve was 0.88 ± 0.05 for FDG-PET and 0.85 ± 0.04 for PIB-PET. The data from FDG-PET research studies had high heterogeneity and funnel plot suggested a publication bias. The diagnostic accuracy determined for both FDG-PET and PIB-PET in this meta-analysis suggests that they are potentially valuable techniques for prediction of progression in patients with MCI. Both have their advantages and their combined use is a promising option for prediction purposes depending on availability and experience.
Collapse
Affiliation(s)
- S Zhang
- Department of Neurology, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China.
| | | | | | | | | | | |
Collapse
|
127
|
da Costa LM, Hayaki S, Stoyanov SR, Gusarov S, Tan X, Gray MR, Stryker JM, Tykwinski R, Carneiro JWDM, Sato H, Seidl PR, Kovalenko A. 3D-RISM-KH molecular theory of solvation and density functional theory investigation of the role of water in the aggregation of model asphaltenes. Phys Chem Chem Phys 2012; 14:3922-34. [DOI: 10.1039/c2cp23131j] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
128
|
Guo HZ, Mudryk Y, Ahmad MI, Pang XC, Zhao L, Akinc M, Pecharsky VK, Bowler N, Lin ZQ, Tan X. Structure evolution and dielectric behavior of polystyrene-capped barium titanate nanoparticles. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm35600g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
129
|
Abstract
BACKGROUND Antipsychotics have been inconclusively implicated in susceptibility to venous thromboembolism (VTE). OBJECTIVES AND METHODS The aim of this study was to investigate the association between antipsychotic drugs and VTE risk by a meta-analysis. PubMed and EmBASE databases were searched for publications through to 10 October 2010. Statistical analysis was performed using Revman 4.2 and Stata 10.0 software. RESULTS 7 case-control studies involving 31 095 cases and 143 472 controls were analyzed. The results indicate that antipsychotic exposure confers a 139 % increased risk of VTE (odds ratio [OR] = 2.39, 95 % confidence interval [CI]:1.71–3.35). Pooled estimates by drug type showed that use of low-potency antipsychotics (OR = 2.91, 95 % CI 1.80–4.71) is the most important risk factor for VTE, followed by atypical (OR = 2.20, 95 % CI 1.22–3.96), conventional (OR = 1.72, 95 % CI 1.31–2.24) and high-potency drugs (OR = 1.58, 95 % CI 1.50–1.67). CONCLUSIONS This meta-analysis suggests that antipsychotics are a risk factor for VTE. Additional studies in large cohorts are required to validate our findings. Future analyses should study potential eff ect modifications by different doses and durations of antipsychotic exposure in different populations.
Collapse
Affiliation(s)
- R Zhang
- Department of Respiratory Medicine, Sir Run Run Shaw Hospital , Zhejiang University School of Medicine, Hangzhou, People’s Republic of China
| | | | | | | | | |
Collapse
|
130
|
Hopfer S, Wylie J, Tan X. P2-S5.05 Risk Profiles of Winnipeg Street Populations: A latent class analysis. Br J Vener Dis 2011. [DOI: 10.1136/sextrans-2011-050108.347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
131
|
Tan X, Frederick J, Ma C, Jo W, Rödel J. Can an electric field induce an antiferroelectric phase out of a ferroelectric phase? Phys Rev Lett 2010; 105:255702. [PMID: 21231602 DOI: 10.1103/physrevlett.105.255702] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Indexed: 05/30/2023]
Abstract
It has been widely accepted that electric fields favor the ferroelectric phase with parallel electric dipoles over the antiferroelectric phase. With detailed measurements in polycrystalline ceramics of Pb(0.99)Nb(0.02[(Zr(0.57)Sn(0.43)(1-y)Ti(y)](0.98)O(3), we demonstrate in this Letter that electric fields can induce an antiferroelectric phase out of a ferroelectric phase, i.e., trigger an apparently unlikely ferroelectric-to-antiferroelectric phase transition. We suggest that it is caused by the volume contraction from the converse piezoelectric effect at the coercive field with a reversed polarity.
Collapse
Affiliation(s)
- X Tan
- Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, USA.
| | | | | | | | | |
Collapse
|
132
|
Smith DD, Tan X, Tawfik O, Milne G, Stechschulte DJ, Dileepan KN. Increased aortic atherosclerotic plaque development in female apolipoprotein E-null mice is associated with elevated thromboxane A2 and decreased prostacyclin production. J Physiol Pharmacol 2010; 61:309-316. [PMID: 20610861 PMCID: PMC3515053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 01/18/2010] [Accepted: 05/25/2010] [Indexed: 05/29/2023]
Abstract
The production of thromboxane A(2) (TXA(2)) and prostacyclin (prostaglandin I(2), PGI(2)) is known to be increased in patients with atherosclerosis. In this study, we evaluated the influence of gender on TXA(2) and PGI(2) production, and their association with the progression of atherosclerosis in apolipoprotein E-null (ApoE(-/-)) mice maintained on a high fat diet for 3 months. En face analyses of aortas showed marked increases in plaque formation in female ApoE(-/-) mice. Quantification of the hematoxylin/eosin (H&E) stained cross sections of the aortic arch revealed 3 to 4-fold higher plaque thickness in female ApoE(-/-) mice. Analyses of 24-hours urine samples for 11-dehydro TXB(2) and 2, 3-dinor-6-keto PGF(1a) indicated that female ApoE(-/-) mice produce up to 15-fold more TXA(2) and 50% less PGI(2) than the age matched males. Interestingly, the serum cholesterol levels in ApoE(-/-) females were 20% lower than males on the high fat regimen. No gender-associated changes in the number of T lymphocytes, mast cells and macrophages were evident in the lesion areas of ApoE(-/-) mice. The results suggest that the markedly elevated TXA(2) production and reduced PGI(2) production are gender-related proatherogenic risk factors in female ApoE(-/-) mice.
Collapse
Affiliation(s)
- D D Smith
- Division of Allergy, Clinical Immunology & Rheumatology, Department of Medicine, University of Kansas Medical Center, Kansas City, USA.
| | | | | | | | | | | |
Collapse
|
133
|
Mather KA, Jorm AF, Milburn PJ, Tan X, Easteal S, Christensen H. No Associations Between Telomere Length and Age-Sensitive Indicators of Physical Function in Mid and Later Life. J Gerontol A Biol Sci Med Sci 2010; 65:792-9. [DOI: 10.1093/gerona/glq050] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
134
|
Reichelt M, Ashton K, Mustafa S, Tang B, Ledent C, Tan X, Headrick J, Morrison R. Selective Effects of Intrinsic A2AAR Activity on Cardiac and Coronary Injuries with LPS Challenge. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
135
|
Liu TY, Zhao L, Tan X, Liu SJ, Li JJ, Qi Y, Mao GZ. Effects of physicochemical factors on Cr(VI) removal from leachate by zero-valent iron and alpha-Fe(2)O(3) nanoparticles. Water Sci Technol 2010; 61:2759-2767. [PMID: 20489248 DOI: 10.2166/wst.2010.167] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The effects of nanoparticle dosage, initial hexavalent chromium concentration, pH value, reaction temperature, and initial concentration of humic acid (HA) on chromate (CrO(4)(2-)) removal from landfill leachate by nanoscale zero-valent iron (NZVI) and hematite (alpha-Fe(2)O(3)) nanoparticles were examined in the present investigations. The Cr(VI) removal rate decreased as the initial Cr(VI) concentration and the reaction temperature increased, whereas corresponding removal rate by NZVI was higher than that of alpha-Fe(2)O(3). The optimum pH for the removal of Cr(VI) by NZVI was found to be 5.0 and more than 99.0% of Cr(VI) was removed within 5 h. However, the removal rate by alpha-Fe(2)O(3) decreased as pH increased. Presence of HA resulted in substantial reduction in the rate and extent of Cr(VI) removal by NZVI, whereas Cr(VI) removal rate by alpha-Fe(2)O(3) did not significantly decrease as HA concentration increased from 0.5 g/L to 3.0 g/L. Increasing the dosage of nanoparticles enhanced the rate constant and the removal of Cr(VI) by NZVI and alpha-Fe(2)O(3) followed pseudo-first-order reaction kinetics. The information should be very useful for the successful application of NZVI and alpha-Fe(2)O(3) for the treatment of groundwater or raw wastewater.
Collapse
Affiliation(s)
- T Y Liu
- School of Environmental Science and Technology, Tianjin University, Weijin Road 92, Nankai District, Tianjin 300072, China.
| | | | | | | | | | | | | |
Collapse
|
136
|
Tan X, Luo Y, Wang P. P3.057 The roles of iron, Mn, zinc on the PD development? Relationship between food intake and serum concentrations. Parkinsonism Relat Disord 2009. [DOI: 10.1016/s1353-8020(09)70621-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
137
|
Ma C, Yan JQ, Dennis K, McCallum R, Tan X. Synthesis, thermal stability and magnetic properties of the Lu1−xLaxMn2O5 solid solution. J SOLID STATE CHEM 2009. [DOI: 10.1016/j.jssc.2009.08.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
138
|
Blattman J, Tan X, Sande J, Pufnock J, Greenberg P. P02-05. All-trans retinoic acid during vaccination increases Ag-specific CD8 T cell homing to mucosal sites and improves recall responses to vaginal challenge. Retrovirology 2009. [PMCID: PMC2767582 DOI: 10.1186/1742-4690-6-s3-p10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
139
|
Ma C, Yan JQ, Dennis KW, Llobet A, McCallum RW, Tan X. Effect of oxygen content on the magnetic properties of multiferroic YMn(2)O(5+δ). J Phys Condens Matter 2009; 21:346002. [PMID: 21715792 DOI: 10.1088/0953-8984/21/34/346002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The effect of oxygen content on magnetic properties in the multiferroic YMn(2)O(5+δ) system was investigated with samples prepared under different oxygen pressures. Our results show that, with increasing oxygen content, the magnetic response changes from being dominated by the anomaly at ∼45 K to the one around 20 K. However, specific heat measurements and neutron powder diffraction studies indicate that the presence of the magnetic transition at ∼45 K is independent of oxygen content. The results suggest that oxygen nonstoichiometry can be one important degree of freedom in manipulating the multiferroic properties.
Collapse
Affiliation(s)
- C Ma
- Division of Materials Science and Engineering, Ames Laboratory, US-DOE, Ames, IA 50011, USA. Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA
| | | | | | | | | | | |
Collapse
|
140
|
Peng G, Wu W, Tan X, Sun Z, Chen Y, Chen Z. The Study on the Characters of HBV-specific T Cells and Liver Damage between HBeAg(+) and HBeAg(−) CHB Patients. Int J Infect Dis 2008. [DOI: 10.1016/j.ijid.2008.05.1246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
141
|
Abstract
BACKGROUND Exenatide (exendin-4) can reduce blood glucose levels, increase insulin secretion and improve insulin sensitivity through mechanisms that are not completely understood. METHODS In the present study, we examined the effects of exenatide treatment on glucose tolerance (intravenous glucose tolerance test), insulin sensitivity (euglycaemic-hyperinsulinaemic clamps), insulin signalling (insulin receptor substrate 1 tyrosine phosphorylation) and adipocytokine levels (visfatin and adiponectin) in high fat-fed rats. RESULTS Administration of exenatide (0.5 or 2.0 mug/kg twice daily x 6 weeks) prevented high-fat diet (HFD)-induced increases in body weight, plasma free fatty acids, triglycerides and total cholesterol. Exenatide also prevented HFD-induced deterioration in peripheral and hepatic insulin sensitivity, insulin clearance, glucose tolerance and decreased tyrosine phosphorylation of insulin receptor substrate-1 (IRS-1) in fat and skeletal muscles. Interestingly, plasma visfatin levels decreased in exenatide-treated rats, whereas expression and plasma levels of adiponectin increased. CONCLUSIONS These results indicate that chronic exenatide treatment enhances insulin sensitivity and protects against high fat-induced insulin resistance.
Collapse
Affiliation(s)
- L Li
- Department of Clinical Biochemistry in Chongqing Medical University and The Key Laboratory of Laboratory Medical Diagnostics in the Ministry of Education, Chongqing, China.
| | | | | | | | | | | | | |
Collapse
|
142
|
Li C, He X, Kuang W, Han T, Zhou Y, Zhang J, Tan X. Macrophage activation sydrome with systemic onset juvenile idiopathic arthritis (SOJIA) in Chinese childern. Pediatr Rheumatol Online J 2008. [PMCID: PMC3334092 DOI: 10.1186/1546-0096-6-s1-p33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
143
|
Xu W, Li X, Chen S, Huang J, Lin S, Lin J, Li Y, Tan X. Expression and distribution of S-100, CD83 and apoptosis-related proteins (Fas, FasL and Bcl-2) in tissues of thyroid carcinoma. Eur J Histochem 2008; 52:153-62. [PMID: 18840555 DOI: 10.4081/1206] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Previous studies have shown that dendritic cells (DCs) and apoptosis play a critical role in the pathogenesis of thyroid carcinoma (TC). This study was designed to investigate the expression and distribution of S-100 protein, CD83 and apoptosis-related proteins (Fas, FasL and Bcl-2) in the thyroid tissues of thyroid papillary carcinoma (TPC) and their role in TPC pathogenesis. Immunohistochemical staining techniques and other methods were used on pathological tissues of 30 patients with Thyroid papillary carcinoma (TPC) and 30 cases of thyroid follicular adenoma (TFA,as control) to detect the expression and distribution of S-100 protein, CD83, Fas, FasL and Bcl-2. A higher expression of S-100 protein in TPC (4.6+/-3.2%) vs.TFA (0.95+/-0.64%) (p<0.001) was observed as well as a higher expression of CD83 in the peri-cancerous tissues (PCT) (32.51+/-22.32) vs. TFA (5.19+/-8.08) (p<0.001), oppositely, CD83 was negative in the cancerous net.TPC showed greater increases in levels of Fas, FasL and Bcl-2 than did the TFA. Our findings suggest that impaired immune function, absence of CD83-positive mature and activated dendritic cells in cancer nodules may have a role in the pathogenesis of thyroid papillary carcinoma.The regulation of Fas, FasL and Bcl-2 in TPC may help them evade the immune system.
Collapse
Affiliation(s)
- Wencan Xu
- The First Affiliated Hospital of Shantou University Medical School, Shantou 515041, Guangdong Province, China.
| | | | | | | | | | | | | | | |
Collapse
|
144
|
Rogers J, Schoepp RJ, Schröder O, Clements TL, Holland TF, Li JQ, Li J, Lewis LM, Dirmeier RP, Frey GJ, Tan X, Wong K, Woodnutt G, Keller M, Reed DS, Kimmel BE, Tozer EC. Rapid discovery and optimization of therapeutic antibodies against emerging infectious diseases. Protein Eng Des Sel 2008; 21:495-505. [PMID: 18480090 PMCID: PMC2461042 DOI: 10.1093/protein/gzn027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Using a comprehensive set of discovery and optimization tools, antibodies were produced with the ability to neutralize SARS coronavirus (SARS-CoV) infection in Vero E6 cells and in animal models. These anti-SARS antibodies were discovered using a novel DNA display method, which can identify new antibodies within days. Once neutralizing antibodies were identified, a comprehensive and effective means of converting the mouse sequences to human frameworks was accomplished using HuFR™ (human framework reassembly) technology. The best variant (61G4) from this screen showed a 3.5–4-fold improvement in neutralization of SARS-CoV infection in vitro. Finally, using a complete site-saturation mutagenesis methodology focused on the CDR (complementarity determining regions), a single point mutation (51E7) was identified that improved the 80% plaque reduction neutralization of the virus by greater than 8-fold. These discovery and evolution strategies can be applied to any emerging pathogen or toxin where a causative agent is known.
Collapse
Affiliation(s)
- J Rogers
- Verenium Corporation, 4955 Directors Place, San Diego, CA 92121, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
145
|
Tan X, Hu SH, Wang XL. The effect of dietary l-carnitine supplementation on pulmonary hypertension syndrome mortality in broilers exposed to low temperatures. J Anim Physiol Anim Nutr (Berl) 2008; 92:203-10. [DOI: 10.1111/j.1439-0396.2007.00727.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
146
|
Abstract
An analytical model is developed for calculation of the surface energy of a nanowire based on thermodynamics and continuum medium mechanics. The core-shell structure and the outer surface skin of the nanowire are considered for the one-dimensional nanostructure and contributions from chemical and structural effects to the surface energy are discussed. It is found that the surface energy of nanowires decreases with the diameter reduction, which induces the melting temperature depression of nanowires. Theoretical results are in agreement with the results of experiments and simulations.
Collapse
Affiliation(s)
- G Ouyang
- State Key Laboratory of Optoelectronic Materials and Technologies, Institute of Optoelectronic and Functional Composite Materials, School of Physics Science and Engineering, Zhongshan University, Guangzhou 510275, People's Republic of China. College of Physics and Information Science, Hunan Normal University, Changsha 410081, People's Republic of China
| | | | | | | |
Collapse
|
147
|
Tan X, Huang YJ, Jiang YW, Hu SH. Persistence of oxytetracycline residues in milk after the intrauterine treatment of lactating cows for endometritis. Vet Rec 2007; 161:585-6. [DOI: 10.1136/vr.161.17.585] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- X. Tan
- Department of Veterinary Medicine; Zhejiang University; Hangzhou 310029 People's Republic of China
| | - Y-J. Huang
- Department of Veterinary Medicine; Zhejiang University; Hangzhou 310029 People's Republic of China
| | - Y-W. Jiang
- Department of Veterinary Medicine; Zhejiang University; Hangzhou 310029 People's Republic of China
| | - S-H. Hu
- Department of Veterinary Medicine; Zhejiang University; Hangzhou 310029 People's Republic of China
| |
Collapse
|
148
|
Tagaya H, Uchiyama M, Kamei Y, Shibui K, Ozaki A, Tan X, Suzuki H, Okada-Aritake S, Li L. Subjective sleep duration was not related with sleep duration but with wake duration in healthy male volunteers. Clin Neurophysiol 2007. [DOI: 10.1016/j.clinph.2007.05.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
149
|
Yang XL, Huang C, Qiao XG, Yao L, Zhao DX, Tan X. Photo-induced lipid peroxidation of erythrocyte membranes by a bis-methanophosphonate fullerene. Toxicol In Vitro 2007; 21:1493-8. [PMID: 17686607 DOI: 10.1016/j.tiv.2007.06.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2006] [Revised: 06/03/2007] [Accepted: 06/22/2007] [Indexed: 11/24/2022]
Abstract
Using human erythrocyte membranes (EMs) as a model system, we have examined photo-induced lipid peroxidation by a bis-methanophosphonate fullerene (BMPF) and four other fullerene derivatives including a mono-methanophosphonic acid fullerene (MMPF), a dimalonic acid C(60) (DMA C(60)), a trimalonic acid C(60) (TMA C(60)) and a polyhydroxylated fullerene (fullerol). Lipid peroxidation was assessed as the malondialdehyde (MDA) level measured by the thiobarbituric acid assay. It was observed that BMPF increased the MDA level of EMs after irradiation in both time- and dose-dependent manners. The photo-induced activity became very significant (p<0.01) under the conditions of either the concentration of 10 microM and irradiation time of 30 min or the concentration of 5 microM and irradiation time of 60 min. Involvement of reactive oxygen species (ROS) in the activity was also examined by specific inhibitors of singlet oxygen, superoxide anions and hydroxyl radicals, respectively. While all three kinds were found responsible for the activity, the former two might play more important roles than the last one. Furthermore, the activity of BMPF was the strongest among all tested fullerene derivatives. These results indicated BMPF was a potential photosensitizer that would find application in photodynamic therapy.
Collapse
Affiliation(s)
- X L Yang
- School of Life Science and Technology, Beijing Institute of Technology, Beijing 100081, China.
| | | | | | | | | | | |
Collapse
|
150
|
Chipman P, Jorm AF, Prior M, Sanson A, Smart D, Tan X, Easteal S. No interaction between the serotonin transporter polymorphism (5-HTTLPR) and childhood adversity or recent stressful life events on symptoms of depression: results from two community surveys. Am J Med Genet B Neuropsychiatr Genet 2007; 144B:561-5. [PMID: 17450557 DOI: 10.1002/ajmg.b.30480] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In this study we investigated interactions between the 5-HTTLPR genotype and environmental risk factors (G x E) on symptoms of depression in two large Australian community samples of adolescents and young adults. We postulated that a significant interaction between the 5-HTTLPR genotype and environmental risk factors of childhood adversity or stressful life events on symptoms of depression would be observed in subjects with at least one short allele (s/l or s/s) compared with subjects with no short alleles (l/l). We did not find significant G x E interactions between the 5-HTTLPR genotype and recent stressful life events or childhood adversity on symptoms of depression in our sample populations. However, we did find adolescents aged 17-18 years homozygous for the long allele (l/l) and exposed to persistently high levels of family adversity over a 6-year period were at a greater risk of depression than subjects with the same genotype exposed to no or persistently low levels of family adversity. This interaction should be interpreted cautiously due to the small number of depressed subjects in the sample with persistently high levels of family adversity.
Collapse
Affiliation(s)
- P Chipman
- Centre for Mental Health Research, Australian National University, Canberra, Australia.
| | | | | | | | | | | | | |
Collapse
|